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refactor(transformer/class-properties): exit transform_class faster if nothing to do #7586

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Dec 3, 2024
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refactor(transformer/class-properties): exit transform_class faster if nothing to do #7586

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12 changes: 7 additions & 5 deletions crates/oxc_transformer/src/es2022/class_properties/class.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -339,6 +339,13 @@ impl<'a, 'ctx> ClassProperties<'a, 'ctx> {
index_not_including_removed += 1;
}

// Exit if nothing to transform
if instance_prop_count == 0 && !has_static_prop_or_static_block {
self.private_props_stack.push(None);
return;
}

// Add entry to `private_props_stack`
if private_props.is_empty() {
self.private_props_stack.push(None);
} else {
Expand All @@ -353,11 +360,6 @@ impl<'a, 'ctx> ClassProperties<'a, 'ctx> {
}));
}

// Exit if nothing to transform
if instance_prop_count == 0 && !has_static_prop_or_static_block {
return;
}

// Extract properties and static blocks from class body + substitute computed method keys
let mut instance_inits = Vec::with_capacity(instance_prop_count);
class.body.body.retain_mut(|element| {
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